126400281063 has 16 divisors (see below), whose sum is σ = 192721794816. Its totient is φ = 72186791040.

The previous prime is 126400281043. The next prime is 126400281109. The reversal of 126400281063 is 360182004621.

It is not a de Polignac number, because 126400281063 - 2⁹ = 126400280551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126400281023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1710498 + ... + 1782863.

It is an arithmetic number, because the mean of its divisors is an integer number (12045112176).

Almost surely, 2^126400281063 is an apocalyptic number.

126400281063 is a deficient number, since it is larger than the sum of its proper divisors (66321513753).

126400281063 is a wasteful number, since it uses less digits than its factorization.

126400281063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3495094.

The product of its (nonzero) digits is 13824, while the sum is 33.

Adding to 126400281063 its reverse (360182004621), we get a palindrome (486582285684).

The spelling of 126400281063 in words is "one hundred twenty-six billion, four hundred million, two hundred eighty-one thousand, sixty-three".